EP 1383429 A1 20040128 - IRIS PATTERN RECOGNITION AND ALIGNMENT
Title (en)
IRIS PATTERN RECOGNITION AND ALIGNMENT
Title (de)
IRIS-MUSTERERKENNUNG UND AUSRICHTUNG
Title (fr)
RECONNAISSANCE DU MOTIF DE L'IRIS ET ALIGNEMENT
Publication
Application
Priority
- EP 0105354 W 20010510
- US 28695401 P 20010427
Abstract (en)
[origin: WO02087442A1] Apparatus and methods are described for aligning diagnostic and therapeutic iris images, i(via) iris pattern recognition, for effecting more accurate laser treatment of the eye. A method for aligning a dilated pupil diagnostic iris image associated with a diagnostic measurement for calculating a laser treatment, with a constricted pupil diagnostic iris image, by identifying an iris landmark that is not identifiable solely between the two images, includes a sequential plurality of diagnostic iris images of varying pupil size such that the iris landmark can be tracked between the two images. The aligned, constricted pupil diagnostic image can then be aligned with a constricted pupil treatment image and the ablation pattern rotated accordingly. Limbal edge detection is used in the diagnostic images to provide pupil center translation information for translational alignment of the laser treatment. An improved aberrometer (40) is disclosed having a variable visible illumination fixation target for controlling pupil size for the diagnostic images. A diagnostic and therapeutic laser eye treatment system (50) is described incorporating the apparatus and method embodiments of the invention.
IPC 1-7
IPC 8 full level
A61B 3/10 (2006.01); A61B 3/15 (2006.01); A61B 5/117 (2006.01); A61F 9/007 (2006.01); G06K 9/00 (2006.01)
CPC (source: EP KR US)
A61B 3/15 (2013.01 - KR); A61B 3/152 (2013.01 - EP US); A61B 5/1171 (2016.02 - EP US); G06V 40/19 (2022.01 - EP US)
Citation (search report)
See references of WO 02087442A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02087442 A1 20021107; AU 2001297967 B2 20060105; BR 0116991 A 20040713; BR 0116991 B1 20110125; CA 2444961 A1 20021107; CA 2444961 C 20110503; CN 100502777 C 20090624; CN 1505491 A 20040616; DE 01274188 T1 20040715; DE 60135879 D1 20081030; EP 1383429 A1 20040128; EP 1383429 B1 20080917; ES 2214164 T1 20040916; ES 2214164 T3 20090301; JP 2004534569 A 20041118; JP 2007268285 A 20071018; KR 100897365 B1 20090515; KR 20030092112 A 20031203; SG 161097 A1 20100527; US 2004169817 A1 20040902; US 2008273173 A1 20081106; US 7331667 B2 20080219; US 8186830 B2 20120529
DOCDB simple family (application)
EP 0105354 W 20010510; AU 2001297967 A 20010510; BR 0116991 A 20010510; CA 2444961 A 20010510; CN 01823187 A 20010510; DE 01274188 T 20010510; DE 60135879 T 20010510; EP 01274188 A 20010510; ES 01274188 T 20010510; JP 2002584797 A 20010510; JP 2007108754 A 20070417; KR 20037014084 A 20031027; SG 2005085022 A 20010510; US 2441508 A 20080201; US 47495804 A 20040426